Brake mechanism for motor road vehicles



March 30 1926. 1,578,459

' J. A. MILLER ET m.

BRAKE MECHANISM FOR MOTOR ROAD VEHICLES Filed Dec. 2, 1922 2 She ets-Sheet 1 FIG 1. I

March 30 1926. 1,578,459

J. A. MILLER ET AL BRAKE MECHANIS FOR MOTOR ROAD VEHICLES Filed Dec. 2, 1922 2 Sheets-Sheet 2 Patented Mar. 192%; v

ENGLAND; 1

BRAKE mnonnmsiyrron moron' nonnvnnrcnns.

Application filedDecembcr. 2,1922; seria nm 604-477;

To all 207mm itmag/ concemu Be it known 1 thatiwe, 'JOHN ALEXANDER MILLER and WILLIAMD oUenAs MILLER, sub--- jects ofgthe: King of swam-1mm, residing at Brighouse, in the"countyro-f"York,v Eng- 7 to allow fortheiaxialmovement thereon ;of the'brake bandwhen aboutto take the same off-i the. pulley and outaof, the brake-cases M is the brake-band, N is thebrake-lining.

land, have invented new and useful Improvcments in and: Relatingt o Bra-ke' Mechanism for Motor Ro ad i-Vehicles, of. which the following is a specification.

This invention consists of a particular construction of brake-casing enclosing a brake-pulley, and their arrangement upon a tube encased propeller shaft carried by certain types of motor propelled vehicles, and is intended to control the backaxle when the latter is disconnected from the engine. v

The construction of the before-mentioned brake-case issuch as to give easy access to the brakeband upon the brake-pulley within, in order that the said brake-band, when requiring to be relined, or for? any other cause, may be easily and quickly taken. out of the said case or replaced upon the pulley without any interference with the latter. The brake and its casing are also situate so as to have the greatest efiiciency, that is, near to the differential gear of the backaxle, and openings provided therein are such that the brake is subjected toair cooling when in use.

Ve attain these objects by the mechanism illustrated in the accompanying drawings in whichv Fig. 1, is a sectional side elevation of our improved brake mechanism as applied to motor propelled vehicles'having an encased propeller shaft; Fig. 2 is an end elevation of Fig. 1; Fig. 3 is an 'end view of the section of brake-casing bolted or otherwise attached to the difierential gear'case; and Fig. 4 is a side elevation of Fig. 1.

Similar letters refer to similar throughout the several views.

Referring to the drawings, A is the tion or part of the brake-case, shown attached by bolts or setscrews B to the differential gear case C. D is the other section of brake-case shown attached to the cut tube E normally encasing the propeller shaft F, and to section A by the setscrews or bolts G, G, screwing into the lugs or parts bossesfI-Ll lii' a J, are openings between. the arms .K, K, of'A and D. "List-he brake-pulley which-is fast-upon the adjacent endsof both worm and propeller shafts,

and situate well within the section J A so as The ends P of the band M project through one of the spaces between the arms K in section A, and have holes R bored therein through which is passed the end of the operating rod S. T is a bracket, in this case, cast upon or attached'to one of the arms K ofsection'A, and bored to support the said rod. S. U is a normal tension spring upon this rod placed between the 7 ends P of the band M. V is the adjusting nut. l/V is the cam bracket bolted to the bracket T, and X is the cam-lever operated, when required, to brake the pulley L by the brake-pedal rod not shown. Y are the pulley arms, and Z are intervening spaces which permit of the extraction of the brake band fromwithin the casing, and also the air current aforesaid to pass through both sections of said casing, for the purposes before described. v

Our improved brake-case is also webbed and shaped with regard to the desired mechanical strength.

What we do claim as our invention and desire to secure byLetters Patent is 1. In brake 'mechanism for motor pelled vehicles the combination with the propeller shaft, a brake-pulley thereon, and a brake-band surrounding said pulley and cooperating therewith, of a casing having openings therein inserted in a cut torque tube encasmg the said shaft, said. casing wholly surrounding the brake-pulley and comprising two separate sections, one section being secured to one part of th'ecut tube and the other section secured to another part thereof,

both sections being suitably bolted together;

,a'ndcranked ends upon the aforesaid brakeband projecting through an opening in the said casing to which is secured the brake operating rod, whereby the casingserves as a continuation or part of the torque tube,

and gives access to the interior through one of the openings of which the brake-band v may be dismantled, removed therefrom, or

replaced upon the'pulley.

ineans for the corresponding end of the" brake-operating rod, securing'said rod to 2. In brake mechanism for motor propelled vehicles as described in claim 1, in which integral bracketfmeans is provided for the casing adapted to provide bearing the projecting .ends of the brake-band, a

- spring upon the rod between theends of the brake-band, and a nut screwing on to the 7 said rod and into engagement'with the brake-band. r f

3. In a brake -assemblage,the combination of a propeller shaft, a "brake pulley fixed thereon,'abrake band engaged around said pulley, a torque tube enclosing the propeller shaft and divided to terminate in spaced relation to the pulley at each side of the 'tinuation' of said tube and being of a size affording sufficient clearance to enable the brake band to be moved laterally out of engagement with the pulley and being provided with substantially peripherally arranged openings through which the brake band inay pass when extracting the same" from the casing or insertingthe'obandcfor applicationto the pulley.

In testimony whereof, we

names to this specification.

JOHN ALEXANDER MILLER. WILLIAM-DOUGLAS MILLER.

e e have signed our 

